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American Power Systems

From directed energy to compact fusion, Stellios designs and builds systems to power the next American century.

What we build

Our Technology Portfolio

HPM & RF Power Systems

Vacuum HPM devices, high-voltage modulators, gyrotrons and klystrons — the power train under everything else we build.

Directed Energy Systems

Compact MW-class platforms delivering speed-of-light, non-kinetic defense against drones, swarms and guided munitions.

Compact Fusion Power

Next: compact fusion for grid-scale and expeditionary power, built on the same high-voltage and RF heating hardware.

Fusion-Driven Propulsion

Further out: fusion applied to in-space propulsion, for transit times chemical and electric stages cannot reach.

Welcome to Stellios

About Stellios

Stellios Technologies is a defense and energy company designing and building the next generation of American power systems. We started Stellios to ensure the United States leads the next power frontier — and restores America's historic dominance in high-energy power systems.

Our platform spans directed energy, high-power microwaves, and the foundational technologies that will define the next century of defense and propulsion. We are vertically integrated — generating extreme power, conditioning it, and applying it across defense, propulsion, space, and energy.

We have deep technical roots in the technologies that matter: vacuum HPM devices, high-voltage modulators, gyrotrons, klystrons, and power supplies that operate at the frontier of what is technically possible.

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Stellios Shield / SS-001

The Next Layer
of Air Defense

Stellios Shield is a compact MW-class HPM directed energy platform delivering speed-of-light, non-kinetic defense based on proven hardware. Pilot-deployable in 9 months.

Expensive kinetic systems do not scale against low-cost drone threats. We cannot shoot thousand-dollar drones with million-dollar missiles. The next generation of defense requires directed energy: speed-of-light engagement, near-infinite magazine, near-zero cost per engagement.

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Manufactured in America

Proudly Built
in the USA

From design to manufacturing, Stellios proudly builds in America. We are on a mission to reindustrialize American high-power microwave manufacturing, and to make sure the compact fusion industry is built here in the United States.